|5915371||Foraged fuel stove||1999-06-29||Hering||126/9R|
|5596980||Portable fireplace||1997-01-28||Whalen et al.|
|5347935||Yard trash burner||1994-09-20||Whitaker||110/240|
|5134990||Barbecue briquette booster||1992-08-04||Bradfield||126/25B|
|3259084||Refuse incinerator insert for containers||1966-07-05||Hance|
The invention relates to a container for burning refuse material such as yard waste, paper products, and other flammable refuse.
Burning refuse has long been an efficient method for reducing large amounts of debris into comparatively small piles of soot and ash. Burning refuse in this manner reduces the amount of material placed into landfills and offers certain environmental advantages associated with the reduction of waste volume. In order to prevent the fire associated with burning the refuse from spreading uncontrollably, it has long been known to place the items to be burned into a container such as a drum or barrel, thereby containing the fire within a small, easily controlled area. Oftentimes holes or other apertures are formed in the barrel to increase airflow through the barrel, thereby improving the barrel's burning characteristics.
The present invention provides a refuse burning container including a plurality of chamber walls cooperating to define a burning chamber and a central axis. Each chamber wall also defines a plurality of chamber apertures. A plurality of flanges extend radially from the chamber walls and substantially parallel to the central axis. A plurality of circumferentially extending lips extend from ends of respective flanges, and each lip is radially spaced apart from an associated chamber wall. The lips cooperate with the chamber walls to at least partially define an air flow passageway. A base is securable to the chamber walls and is engagable with the ground to support the container.
The present invention also provides a method for making a refuse burning container. The method includes forming a plurality of chamber panels having a top edge, a bottom edge, a free edge, a flange edge, and a flange extending from the flange edge, each chamber panel also defines a plurality of apertures. The free edge of a first chamber panel are coupled to the flange edge of a second chamber panel, and additional chamber panels are coupled to the first and second panels to define a burning chamber having a central axis. A cover defining a plurality of apertures is positioned on the top edges of the panels to overlie the chamber.
Other features of the invention will become apparent to those skilled in the art upon review of the following detailed description, and drawings.
FIG. 1 is a perspective view of a refuse burning container embodying the invention.
FIG. 2 is a section view taken along line 2—2 of FIG. 1.
FIG. 3 is an enlarged exploded view of a portion of FIG. 2.
FIG. 4 is a side view of a portion of the refuse burning container illustrated in FIG. 1
FIG. 5 is a perspective view of a handle for the refuse burning container illustrated in FIG. 1.
FIG. 6 is a perspective view of a cover hook for the refuse burning container illustrated in FIG. 1.
FIG. 7 is a top view of a cover for the refuse burning container illustrated in FIG. 1.
FIG. 8 is a perspective view of a cross bar for the refuse burning container illustrated in FIG. 1.
FIG. 9 is an exploded view of a base assembly for the refuse burning container illustrated in FIG. 1.
FIG. 10 is a section view similar to FIG. 3 illustrating a container which is an alternative embodiment of the invention.
Before one embodiment of the invention is explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or being carried out in various ways. Also, it is understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of “including” and “comprising” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.
FIGS. 1-9 illustrate a refuse burning container 10 embodying the invention and which is adapted for use to burn of yard waste, burnable refuse, and the like. Referring to FIG. 1, the container 10 includes a cylindrical portion 12 having a central axis 13, and a burning chamber 14. The cylindrical portion 12 is supported by a generally annular base assembly 15 that is fixed to the cylindrical portion 12. The cylindrical portion 12 also includes a plurality of apertures 16 that afford ventilation along substantially the entire length of the cylindrical portion 12. The container 10 also includes a cover 18, cover hooks 19, and handles 20.
Referring now also to FIGS. 2-4, the cylindrical portion 12 includes a plurality (e.g. four as illustrated) of generally arcuate chamber panels 22 having formed therein the ventilation apertures 16. Each panel 22 is similarly configured and includes a top edge 23, a bottom edge 24, a free edge 25, and a flange edge 26. A flange 27 extends from the flange edge 26 of each panel 22, and a lip 28 extends from the end of each flange 27. A plurality of mounting slots 29 extend along the free edge 25 of each panel 22, and a plurality of corresponding mounting holes 30 extend along the flange edge 26 of each panel 22. The slots 29 and holes 30 are configured such that the panels 22 may be secured to each other by extending fasteners 31 through the mounting slots 29 of one panel 22 and into corresponding mounting holes 30 of an adjacent panel 22. For ease of assembly, the fasteners 31 are preferably of the self-tapping type, however other types of fasteners and other fastening methods are possible as well. Additional panels 22 are secured to one another in the manner described above until the plurality of panels 22 form a complete cylinder. Once assembled, the flanges 27 of each panel 22 extend generally radially inwardly toward the central axis 13, and the lips 28 of each panel extend generally circumferentially with respect to the cylindrical portion 12.
Those of ordinary skill in the art will readily understand that the flanges 27 and the lips 28 can be formed integrally with the panel 22. As illustrated in FIG. 4, the panel 22, the ventilation apertures 16, the mounting slots 29 and the mounting holes 30 are cut from a relatively flat sheet of material, such as a sheet of stainless steel. The flat sheet can then be bent as required to form the flanges 27 and the lips 28. In the illustrated embodiment, the bends that form the flanges 27 and the lips 28 are in the same direction. However, other methods for forming the panels 22, including bending the flat sheet in different directions, or attaching the flanges 27 and lips 28 separately, can also be successfully used. In the illustrated embodiment, the flanges 27 and the lips 28, like the rest of the panel 22, have ventilation apertures 16 formed therein.
Referring also to FIGS. 5-7, the handles 20 are secured to the cylindrical portion 12 by extending fasteners (e.g. the self-tapping fasteners 31 described above) through apertures 32 in the handles 20 and through the mounting slots 29 and mounting holes 30 of the panels 22. The cover hooks 19 are secured to the cylindrical portion 12 in a similar manner, and preferably three cover hooks 19 are installed and are angularly spaced from one another by approximately 90 degrees. Each cover hook 19 includes a straight portion 34 that is secured to the panels 22, and a U-shaped portion 36 that extends over the top edges 23 of the panels 22. The cover 18 is sized to overlap the top edges 23 of the assembled cylindrical portion 12 and is received by the U-shaped portions 36 of the cover hooks 19. The cover 18 includes a plurality of holes 38 providing ventilation to the burning chamber 14 while preventing large pieces of ash or burning debris from leaving the chamber 14. The cover 18 can be slid into and out of place between the top edges 23 of the panels 22 and the U-shaped portions 36 of the cover hooks 19.
Referring to FIGS. 2 and 8, pair of cross bars 45 each have a generally V-shaped cross-section and are configured to at least partially support material inserted into the burning chamber 14. The cross bars 45 are inserted into generally triangular support apertures 46 formed in the panels 22. Each cross bar 45 extends generally diametrically across the cylindrical portion 12 and is supported on each end by one of the panels 22. Preferably, the cross bars 45 are inserted such that the V-shaped cross-section points generally upwardly and such that the cross bars 45 are at an angle of approximately 90 degrees to each other when viewed along the central axis 13.
Referring to FIG. 9, the base assembly 15 includes a pair of generally semi-circular portions 50 that are preferably formed from a relatively flat sheet of metal. The semi-circular portions 50 include an inner edge 54 along which is formed a plurality of radially inwardly extending mounting tabs 58. In some embodiments, the mounting tabs 58 are formed integrally with the semi-circular portions and are bent generally upwardly to receive the cylindrical portion 12. As illustrated, the mounting tabs 58 can engage the outside surfaces of the panels 22 and are secured thereto using fasteners, such as the self-tapping fasteners 31 described above. The semi-circular portions 50 also include a pair of coupling tabs 62. The coupling tabs 62 are provided such that two semi-circular portions 50 can be secured to one another to define a generally annular support ring. When the container 10 is fully assembled, the bottom edges 24 of the panels 22 rest upon the semi-circular portions 50 between the inner edges 54 and the mounting tabs 58. The semi-circular portions 50 also include grounding apertures 66 that are spaced along a bolt circle 70. The grounding apertures receive stakes 72 that are insertable into the ground to secure the base assembly 15 and the cylindrical portion 12.
The base assembly 15 can also include a base plate 74. The illustrated base plate 74 is generally rectangular and includes sides 78 having a length that is longer than the diameter of the inner edge 54, but smaller than the diameter of the bolt circle 70. In this way, the plate substantially completely overlies the bottom portion of the burning chamber 14, but does not extend so far as to prevent the insertion of stakes 72 through the grounding apertures 66. The base plate 74 also includes a pair of slots 82 that define handles. The base plate 74 affords easy collection and disposal of burnt refuse, as discussed further below.
The container 10 can be assembled from the various components by coupling the free edge 25 of a first panel 22 to the flange edge 26 of a second panel 22. Additional panels 22 (e.g. four panels as illustrated) are then coupled to the first and second panels 22 in a similar manner until a complete cylinder is formed, thereby defining cylindrical portion 12, the burning chamber 14 and the central axis 13. As the panels 22 are coupled together, the flanges 27 can be positioned to extend radially inwardly with respect to the central axis 13. The handles 20 and the cover hooks 19 can be attached to the panels 22 using the mounting slots 29 and mounting holes 30 of the panels, although other apertures for securing the handles 20 and cover hooks 19 can be provided as well. The assembled cylindrical portion 12 is then secured to the base assembly 15. The cross bars 45 are inserted through the support apertures 46 and the cover 18 can then be positioned on the top edges 23 to overlie the burning chamber 14.
In operation, the container 10 is preferably positioned on relatively soft ground such as sand or dirt. The stakes 72 can be inserted into the ground to secure the base assembly 15 and the cylindrical portion against undesired movement or overturning. Burnable refuse, such as paper, wood, yard refuse and the like can be positioned inside the burning chamber 14. The refuse is supported at least partially by the cross bars 45, and may also rest on the base plate 74 or the ground. The refuse is supported along the sides of the burning chamber 14 at least partially by the inwardly extending flanges 27 and the circumferentially extending lips 28. The flanges 27 and the lips 28 cooperate to provide a chimney like air flow passageway 86 that keeps refuse away from the panels 22 in the area of the flanges 27 and that allows fresh air to flow along the sides of the burning chamber 14, in the direction shown by arrow 87 in FIG. 4. As can be seen in FIG. 2, the panels 22 define a first outer diameter, and the lips 28 define a second inner diameter, and the air flow passageways 86 are defined between the first and second diameters. Further, ventilation apertures formed in the flanges 27 and the lips 28 that define the air flow passageways 86 afford air flow into the burning chamber 14 transverse to the central axis 13, as shown by arrow 89 in FIGS. 2 and 3. The flanges 27 also assist in preventing refuse from overlying the ventilation apertures 16 to farther improve air flow through the burning chamber 14. The specific size and configuration of the flanges 27 and the lips 28 can be modified to achieve certain desired burning characteristics.
Preferably, the cover 18 is positioned over the refuse and the waste is lit through any of the ventilation apertures 16. Alternatively, The waste may be lit from the top, followed by positioning of the cover 18 between the U-shaped portions 36 of the cover hooks 19. As the refuse burns, fresh air is drawn into the burning chamber 14 through the ventilation apertures 16, and air flows generally upwardly through the air flow passageways 86 defined by the flanges 27 and lips 28, exiting through the holes 38 in the cover 18. The sizing and positioning of the ventilation apertures 16 and the cover holes 38 are such that large pieces of ash and/or debris are substantially prevented from leaving the burning chamber 13, while a substantial amount of air flow is maintained through the burning chamber 13. When the refuse has completely burnt and the container 10 has cooled, the stakes can be removed from the base assembly 15 and the cylindrical portion 12 and semi-circular base portions 50 can be lifted or rolled away from the base plate 74, leaving a pile of burnt refuse on the base plate 74. The base plate handle apertures can then be used to carry the base plate and the pile of burnt refuse to an appropriate refuse container where the burnt refuse can be disposed of.
FIG. 11 illustrates an alternative embodiment of the container 110. Features and components of the container 110 that are the same or similar to features and components of the container 10 have been given like reference numerals, increased by one-hundred. The container 110 is similar to the container 10, however the flanges 127 of the panels 122 extend radially outwardly, as opposed to radially inwardly. The lips 128 extend circumferentially from the ends of the flanges 127 and are coupled to an adjacent panel 122. The air flow passageways 186 of the container 110 extend along the burning chamber 113 in a similar manner as the passageways 86, but are positioned radially outwardly with respect to the panels 122. Other orientations and configurations of the panels, flanges, lips, and passageways are possible as well.
Various features of the invention are set forth in the following claims.